What I don't understand is why people are choosing to die on this hill. Supporting Palestine Action isn't the only way to support Palestine, and if they've been essentially disbanded by the proscription (bank accounts frozen etc) then it isn't even an effective way to give support in any meaningful sense. The banner "I oppose genocide. I support Palestine." would be legal, and arguably more effective than the longer one because (in theory at least) it should be unopposed by law.
A quick search for "how to support palestine uk" found these pages among many others:
https://www.islamic-relief.org.uk/giving/appeals/palestine/how-to-help-palestine-and-gaza/
https://www.quaker.org.uk/blog/5-solidarity-actions-you-can-take-for-palestine-and-israel-oct-2023
Oh I thought this was another article about that big orange crybaby in Moronica.